KR20060048894A - Electric socket device - Google Patents

Abstract

assignment

The sensor can be easily attached and the insulation distance between the sensor and the receiving blade can be secured.

Resolution

The permeation hole 7 was formed between the plug insertion ports 6 and 6, and the sensor 16 which detects the flame discharge which generate | occur | produces between plug blades inside the permeation hole 7 was arrange | positioned. The sensor 16 was arranged so that the insulating partition 13 stood up between the accommodating blades 17 and 17, accommodated in it, and a part of the sensor faced the said through-hole. The outlet case includes an intermediate base body 5 including a mounting portion of the accommodating blade 17 and a partition wall 13, a main body 3 supporting the circuit board 22 and the intermediate base body 5, and a main body 3. It is formed of the cover body 4 which covers the front surface.

Outlet, socket

Description

Power Outlet Device {ELECTRIC SOCKET DEVICE}

1 is a front view of a power outlet device showing a first embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a perspective view of the intermediate base body of FIG.

4 is an essential part cross sectional view of a power outlet device showing a modification of the configuration of the sensor attachment portion;

FIG. 5 is a perspective view of the intermediate base body of FIG. 1, illustrating a modification of the sensor. FIG.

6 is a cross-sectional view of an essential part of a power outlet device showing the attachment structure of the sensor of FIG. 5;

7 is an essential part cross sectional view of the power outlet device showing a modification of the configuration of the sensor attachment portion;

8 is an essential part cross sectional view of a power outlet device showing a modification of the configuration of the sensor attachment portion;

9 is a front view of a power outlet device showing a second embodiment of the present invention;

10 is a cross-sectional view taken along the line B-B in FIG. 9.

11 is a perspective view of the bushing of FIG. 9.

Fig. 12 is a sectional view of a power outlet device showing a modification of the through hole and the bushing.

Fig. 13 shows a third embodiment of the present invention, (a) is a front view of a power outlet device, and (b) is an enlarged view of a J portion.

Fig. 14 shows a fourth embodiment of the present invention, (a) is a front view of a power outlet device, and (b) is an enlarged view of an F portion.

(A) is sectional drawing along the C-C line | wire of FIG. 14, (b) is enlarged view of G part.

16 is a perspective view of the bushing of FIG. 14.

17 shows a fifth embodiment of the present invention, (a) is a front view of a power outlet device, and (b) is an enlarged view of an H portion.

Fig. 18 is a sectional view taken along the line D-D in Fig. 17, and (b) is an enlarged view of part I.

19 is a perspective view of the bushing of FIG. 17.

20 is a front view of a power outlet device showing a sixth embodiment of the present invention;

FIG. 21 is a cross-sectional view taken along the line E-E in FIG. 20; FIG.

(Explanation of symbols for the main parts of the drawing)

2: outlet case 3: body

4 cover 5 intermediate base body

6: plug insertion hole 7: penetration hole

13 bulkhead 14 hole

15: sensor insertion hole 16: sensor

17: acceptance day 30: bulkhead

52: outlet case 56: plug insertion hole

57: penetration hole 62: receiving blade

63: bushing 64: detection hole

67 sensor 70 bushing

71: gap 72: sensor

74: bushing 82: outlet case

86: plug insertion hole 87: through hole

92: acceptance day 93: pitcher

97: sensor

Technical field

The present invention relates to a power outlet device that detects spark discharge generated before tracking and prevents the occurrence of tracking.

Background technology

Conventionally, there exist some which were shown by patent document 1 as a power outlet device which has a function which prevents tracking. The technique of Patent Literature 1 arranges a conductive plate in a plug insertion opening on the front of a power outlet device, one end protrudes from the surface, and one end is connected to an earth terminal, thereby conducting leakage current generated between the plug blades before tracking. It flows through the board to the earth terminal, and it detects it as an electric leakage current in an earth leakage circuit breaker, and cuts off a circuit.

By the way, the said conventional power outlet device exposes the conductive plate as a sensor to the cover surface of a power outlet device, and there exists a possibility that it may malfunction when a conductive object contacts. In addition, the user's hand or the like is also considered to be in contact with the sensor, which is not preferable.

Therefore, the present applicant can detect the flame discharge (scintillation) between the plug blades which causes the tracking phenomenon by providing a through hole without exposing the sensor to the cover surface of the power outlet device in Patent Document 2, inside the cover. A power outlet device is proposed. This power outlet device employs a method of arranging a sensor on the back surface of a cover as a provision structure of the sensor, and covering the back of the sensor with an insulator such as resin.

[Patent Document 1]

Japanese Patent Laid-Open No. 2001-35599

[Patent Document 2]

Japanese Patent Laid-Open No. 2004-327247

However, the configuration of Patent Document 2 has a drawback in that workability is poor because detailed work must be performed in a narrow space, and the connection between the sensor and the circuit board is performed through a lead wire, which is necessary to perform soldering. .

In addition, since the through hole formed in the cover prevents water or dust from entering, and also reduces the load of the amplifier circuit by reducing the output current from the sensor, the smaller the smaller the better. However, the power outlet device of Patent Document 2 has a limit of about 0.5 mm in diameter because of the formability of a cover made of an insulating material such as a synthetic resin. There is a problem that gets worse.

Accordingly, an object of the present invention is to provide a power outlet device capable of easily attaching a sensor to solve the above-mentioned problems, and capable of performing a good discharge detection operation without forming a small through hole. do.

In order to solve the said subject, the invention of Claim 1 is equipped with at least one pair of plug insertion holes in the front surface of the outlet case formed of the insulating material, and inserts the blade of a plug inside the said plug insertion hole. It is provided by providing a pair of receiving blades for supporting, and having a permeation hole between the plug insertion openings on the front of the outlet case, and a sensor for detecting the spark discharge generated between the blades of the plug inside the permeation hole. In the power outlet device, a partition wall made of an insulator is erected between the accommodating blades, the sensor is accommodated in the partition wall, and a part of the sensor is disposed to face the transmission hole.

By this structure, a sensor can be attached without carrying out adhesive operation, and attachment can be made easy.

The invention according to claim 2, wherein in the invention according to claim 1, the outlet case has an accommodating blade mounting portion and the partition wall, an intermediate base body supporting the sensor, a main body supporting the circuit board and the intermediate base body, and The cover body which covers the front surface of a main body and has a plug insertion opening is characterized by the above, and it is possible to improve assembly workability by this structure.

In the invention according to claim 3, in the invention according to claim 1, the sensor is accommodated in the partition wall by insert molding, and this configuration can eliminate the attachment work of the sensor.

In the invention according to claim 4, in the invention according to claim 2, the sensor is accommodated in the partition wall by insert molding, and this configuration can eliminate the attachment work of the sensor.

The invention according to claim 5, wherein in the invention according to claim 1, a sensor insertion hole is formed in a partition wall, and the sensor is inserted into the sensor insertion hole to accommodate the sensor. It can attach and can make attachment of a sensor easy.

The invention according to claim 6, wherein in the invention according to claim 2, a sensor insertion hole is formed in a partition wall, and the sensor is inserted into the sensor insertion hole to accommodate the sensor. It can attach and can make attachment of a sensor easy.

In the invention according to claim 2, in the invention according to claim 2, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor is extended to the circuit board, and provided on the circuit board. It inserts into an insertion part, and it electrically connects. By this structure, connection of a sensor and a circuit board can be made easy.

In the invention according to claim 8, in the invention according to claim 3, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor is extended to the circuit board, and provided on the circuit board. It inserts into an insertion part, and electrically connects, The connection of a sensor and a circuit board can be made easy by this invention.

In the invention according to claim 9, in the invention according to claim 4, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor is extended to the circuit board, and provided on the circuit board. It inserts into an insertion part, and it electrically connects. By this structure, connection of a sensor and a circuit board can be made easy.

In the invention according to claim 10, in the invention according to claim 5, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor is extended to the circuit board, and the circuit board is provided. It inserts into an insertion part, and it electrically connects. By this structure, connection of a sensor and a circuit board can be made easy.

In the invention according to claim 11, in the invention according to claim 6, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor is extended to the circuit board, and the circuit board is provided. It inserts into an insertion part, and it electrically connects. By this structure, connection of a sensor and a circuit board can be made easy.

The invention according to claim 12, wherein in the invention according to claim 2, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and the rear end of the sensor and the At least one of the sensor connection portions on the circuit board side is formed so as to be elastically deformable, and both are brought into contact with each other to be electrically connected. The configuration of the present invention can facilitate connection between the sensor and the circuit board.

In the invention according to claim 13, in the invention according to claim 3, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and the rear end of the sensor and the At least one of the sensor connection portions on the circuit board side is formed so as to be elastically deformable, and both are brought into contact with each other to be electrically connected. With this configuration, the connection between the sensor and the circuit board can be facilitated.

The invention according to claim 14, wherein in the invention according to claim 4, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and the rear end of the sensor and the At least one of the sensor connection portions on the circuit board side is formed so as to be elastically deformable, and both are brought into contact with each other to be electrically connected. With this configuration, the connection between the sensor and the circuit board can be facilitated.

In the invention according to claim 15, in the invention according to claim 5, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and the rear end of the sensor and the At least one of the sensor connection portions on the circuit board side is formed so as to be elastically deformable, and both are brought into contact with each other to be electrically connected. With this configuration, the connection between the sensor and the circuit board can be facilitated.

In the invention according to claim 6, in the invention according to claim 6, the sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and the rear end of the sensor and the At least one of the sensor connection portions on the circuit board side is formed so as to be elastically deformable, and both are brought into contact with each other to be electrically connected. With this configuration, the connection between the sensor and the circuit board can be facilitated.

The invention according to claim 17 is provided with at least one pair of plug insertion holes on the front face of the outlet case formed of an insulating material, and a pair of receiving blades for fitting the blade blades inside the plug insertion holes. A power outlet device comprising: a discharge hole having a permeation hole between the plug insertion openings on the front face of the outlet case, and detecting a flame discharge generated between the blades of the plug inside the permeation hole. In the hole, a bushing made of an insulator having elasticity is press-fitted, and the bushing has at least one through-hole in the press-in direction, and the sensor communicates with the discharge case surface by contacting the outlet case surface with the sensor. It is characterized by enabling detection.

By this structure, since the permeation hole does not need to be formed small to the limit, the moldability of the outlet case is good and the productivity is improved. Moreover, since the hole diameter of a detection hole can be made small and a bushing has elasticity, it is easy to clean a detection hole. In addition, when a large number of detection holes are formed in the bushing, the detection range of the flame discharge can be expanded.

The invention according to claim 18 is provided with at least one pair of plug insertion holes on the front surface of the outlet case formed of an insulating material, and a pair of accommodating blades for sandwiching the blades of the plug inside the plug insertion holes is disposed. And a sensor for detecting a spark discharge generated between the blades of the plug inside the transmission hole, the sensor having a penetration hole between the plug insertion holes on the front side of the socket case. A bushing made of an insulator having elasticity is press-fitted, and a gap is provided in at least one contact surface between the bushing and the through hole, and the sensor detects flame discharge by communicating the surface of the outlet case with the sensor. It is characterized by the above-mentioned.

By this structure, since the permeation hole does not need to be formed small to the limit, the moldability of the outlet case is good and the productivity is improved. In addition, the gap for detecting the flame discharge can be easily made small, and the bushing is elastic, so that the gap can be easily cleaned.

The invention according to claim 19 is provided with at least one pair of plug insertion holes on the front surface of the outlet case formed of an insulating material, and a pair of accommodating blades for sandwiching the blades of the plug inside the plug insertion holes is provided. And a sensor for detecting a spark discharge generated between the blades of the plug inside the transmission hole, the sensor having a penetration hole between the plug insertion holes on the front side of the socket case. A bushing made of an insulating water permeable body is embedded.

By this structure, since the permeation hole does not need to be formed small to the limit, the moldability of the outlet case is good and the productivity is improved. Moreover, since it detects from a surface, the detection range of a flame discharge can be expanded, and even if it wipes the surface, a detection part does not become clogged and it is easy to clean.

To practice the invention  Best form for

EMBODIMENT OF THE INVENTION Hereinafter, embodiment which actualized this invention is described in detail based on drawing.

<1st embodiment>

1 is a front view showing a first embodiment of a power outlet device according to the present invention, and FIG. 2 is a sectional view taken along the line A-A. The outlet case 2 of the power outlet device 1 includes a main body 3 having an open front face, a cover body 4 attached to close the front opening of the main body 3, a main body 3 and a cover body ( It consists of the intermediate base body 5 accommodated in the internal space formed by 4). The outlet case 2 is made of an insulating material such as a synthetic resin, and an electric leakage detecting circuit and a breaker for blocking the converter are incorporated therein.

As for the cover body 4, a pair of plug insertion holes 6 and 6 for inserting the blade of a plug (not shown) in the front surface are formed in the center and the lower part, and each plug insertion hole 6 and 6 is provided. The transmission hole 7 is formed in the intermediate position between them. In addition, the upper part of the cover body 4 is tested for the operation handle 8 for return operation of the breaker which cut | disconnected at the time of tracking, the display lamp 9 which shows a short circuit occurrence, a tracking occurrence, etc., and a short circuit interruption operation. The test button 10 is provided.

The intermediate base body 5 is formed as shown in the perspective view of FIG. 3, and the upright part 12 is formed in the front circumference of the rectangular plate part 11, and the cover body 4 is located in the intermediate position of a short side direction. The partition 13 which extends to the back surface of the is formed. A hole 14 is formed at a front end of the partition wall 13 at a position opposite to the transmission hole 7 of the cover body 4, and a sensor insertion hole 15 continuous to the hole 14 at the rear end of the partition wall 13. ) Is formed. The sensor insertion hole 15 is attached so that the sensor 16 which consists of metal plates is inserted, and the front end of the sensor 16 faces the hole 14. The rear end of the sensor 16 is provided so as to be exposed from the back surface of the intermediate base body 5. In this way, a part of the sensor 16 is provided so as to face the transmission hole 7 through the hole 14, and it becomes possible to detect the flame discharge which generate | occur | produces between blades of a plug.

In addition, the receiving blades 17 which hold the blades of the plug through the partitions 13 on both the left and right sides thereof are positioned and positioned by the riser 12 and the partitions 13, respectively. Since it is a same pole, it is connected by the connection part 18. As shown in FIG. On the accommodating blade 17, a wire 21 connected to the insertion terminal 20 of the main body 3 to which the cable 19 extending from the distribution board or the like is connected, or a power supply for one end connected to a circuit board 22 to be described later. The electric wire 23 is connected.

In addition, when the sensor 16 is insert-molded on the partition 13, the effort of mounting can also be reduced. The sensor 16 may be a conductive member even if it is not a metal plate.

On the other hand, in the space formed in the distribution part of the intermediate base body 5, the circuit board 22 which mounted various circuits, such as a tracking detection circuit and a power supply circuit, has the rectangular plate part 11 of the intermediate base body 5, and It is stored in parallel. The other end of the lead wire 24, one end of which is connected to the sensor 16, is connected to the circuit board 22, and the tracking detection circuit and the sensor 16 are electrically connected to each other. In addition, a breaker (not shown) is accommodated in the space formed above the intermediate base body 5.

The power outlet device 1 having the above configuration performs the tracking detection operation as follows. When dust or the like accumulates between the blades of the plugs connected to the receiving blades 17 and 17, and the dust absorbs moisture in the air, a minute current flows between the blades of the plug through the moisture. In this way, spark discharge occurs when the charged moisture vaporizes. When the generated spark discharge enters the transmission hole 7 and contacts the sensor 16, a minute current flows through the sensor 16. From the output current of the sensor 16, the tracking detection circuit detects the tracking (exactly, the occurrence of the spark discharge that causes tracking), activates the breaker, and is displayed by the display lamp 9. Is done.

In this way, the spark discharge generated before the tracking occurrence is detected and the outlet output is stopped. The sensor can be simply inserted into the partition wall of the intermediate base body, and the sensor can be easily attached. Moreover, the insulation distance between a sensor and a receiving blade can be ensured reliably.

In this embodiment, the tip of the sensor 16 is formed so as not to protrude from the partition 13, but as shown in the cross-sectional view of FIG. 4, the tip of the sensor 16 protrudes from the partition 13 and is formed. Also good.

FIG. 5 shows a modification of the sensor 16, and FIG. 6 is a sectional view of a power outlet device for explaining the attachment structure of the sensor 16 of FIG. The sensor 16 is formed of a metal plate punched in a roughly c-shape, and two portions are integrally formed. And the back part is provided with the terminal 16a which protrudes from the back surface of the intermediate base body 5. As shown in FIG.

On the other hand, the insertion terminal 27 is provided in the front surface of the circuit board 22 in the position which opposes the terminal 16a of the sensor 16, and the terminal 16a of the sensor 16 is inserted into the insertion terminal 27. FIG. It is possible to make electrical connection with the circuit board 22 only by the operation | work which inserts. In addition, the same code | symbol is attached | subjected to the same component as FIG.2, FIG.3, and description is abbreviate | omitted.

With such a terminal structure, a sensor and a circuit board can be connected only by insertion operation, and connection operation becomes easy.

In FIG. 5, since the two sensors 16 are integrally formed, only one insertion terminal 27 may be used. However, when one sensor 16 is provided for each of the receiving blades 17, the insertion terminal 27 is used. The number of times is required by the number of sensors 16.

The power outlet device sectional drawing of FIG. 7 shows the modification of a sensor attachment part. In FIG. 7, the rear end of the sensor 16 is provided to protrude from the rear surface of the intermediate base body 5, and is connected to the plate spring shape that is elastically deformable at a position facing the rear end of the sensor 16 of the circuit board 22. The terminal 28 is provided. In addition, the same code | symbol is attached | subjected to the same component as FIG.2, FIG.3, and description is abbreviate | omitted.

Thus, when the power outlet device 1 is assembled, the rear end of the sensor 16 contacts the connection terminal 28 and is electrically connected to the circuit board 22, so that the connection operation between the sensor and the circuit board is easy. Do. In addition, the rear end of the sensor 16 may be formed to be elastically deformable, the contact terminal 28 of the circuit board 22 may be brought into contact with each other, or both may be elastically deformed and connected.

The power outlet device sectional drawing of FIG. 8 shows the modification of a sensor attachment part. In FIG. 8, the partition wall 30 is integrally formed on the rear surface of the cover body 4. In addition, the through hole 31 is formed in the intermediate position of the intermediate | middle base body 5 in the short side direction, and the partition 30 penetrates through the through hole 31 at the time of assembly. In addition, the same code | symbol is attached | subjected to the same component as FIG. 6, and description is abbreviate | omitted. Thereby, the hole of a partition and the penetration hole of a cover body do not shift.

In addition, although the said embodiment is a two-hole power outlet device which two plugs 17 can connect, the 1-hole power outlet device, the extension tab which a plurality of plugs can connect, etc. may be sufficient, The built-in circuit is cut off, but the operation at the time of tracking detection is not limited. In addition, it is also possible to change suitably and to implement in the range which does not deviate from the meaning of this invention, such as the shape, structure, and function of a power outlet device, such as forming an intermediate base integrally with a main body.

<2nd embodiment>

9 and 10 show a second embodiment of the power outlet device of the present invention, FIG. 9 is a front view and FIG. 10 is a sectional view taken along the line B-B. The outlet case 52 of the power outlet device 1 includes a main body 53 having an open front face, a cover body 54 attached to close the front opening of the main body 53, a main body 53 and a cover body ( It consists of an intermediate base body 55 accommodated in the internal space formed by 54). The outlet case 52 is formed of an insulating material such as a synthetic resin, and an electric leakage detecting circuit and a breaker for blocking the converter are incorporated therein.

As for the cover body 54, a pair of plug insertion ports 56 and 56 for inserting a blade of a plug (not shown) in the front surface is formed in two places of a center and a lower part, and each plug insertion port 56 and 56 is provided. The transmission hole 57 is formed in the intermediate position between them. In addition, the upper part of the cover body 54 tests the operation handle 58 for return operation of the breaker which cut | disconnected at the time of tracking, the display lamp 59 which shows an electric leakage occurrence, a tracking occurrence, etc., and an electric leakage interruption | operation operation | movement. The test button 60 is provided.

An accommodating blade 62 is formed inside the plug insertion port 56 to hold the blade of the plug. The bushing 63 shown in the perspective view of FIG. 11 is attached to the permeation hole 57. The bushing 63 is formed to have a slightly larger outer shape than the shape of the through hole 57 by a soft resin material or rubber material having elasticity. And it is formed in the column shape according to the perforation hole 57, and the detection hole 64 is penetratingly formed on the center axis | shaft. Moreover, the flange part 63a is provided so that an up-and-down end part may contact with the permeation hole 57 reliably.

The bushing 63 is press-fitted into the transmission hole 57 so that the surface of the outlet case 52 and the sensor 67 described later communicate with each other by the detection hole 64.

Inside the outlet case 52, a sensor 67 is disposed inside the transmission hole 57. The sensor 67 is formed of a conductive member such as a metal piece, and is connected to a tracking detection circuit of the circuit board 68 disposed inside the outlet case 52.

The power outlet device 1 having the above configuration performs the tracking detection operation as follows. When dust or the like accumulates between the blades of the plugs connected to the receiving blades 62 and 62, and moisture is absorbed in the air by the dust, a minute current flows between the blades of the plug through the moisture. In this way, when the charged moisture vaporizes, spark discharge occurs. When the generated spark discharge enters from the detection hole 64 of the bushing 63 provided in the transmission hole 57 and contacts the sensor 67, a minute current flows through the sensor 67. From the output current of this sensor 67, the tracking detection circuit detects tracking, activates the breaker, cuts off the converter, and performs display by the display lamp 59.

Thus, since the bushing with a detection hole is attached to a transmission hole, it is not necessary to form a transmission hole small to a limit, the moldability of an outlet case can be improved, and productivity improves. In addition, the hole diameter of the detection hole can be easily made small, for example, it can be made about 0.1 mm by using the thing which reduces the external shape of a bushing by press-fitting and mounting. Moreover, since the bushing has elasticity, even when the detection hole is clogged with dust or the like, it can be easily cleaned using a needle or the like which is slightly larger in diameter than the hole diameter of the detection hole.

Third Embodiment

FIG. 13: shows the power outlet device which showed 3rd Embodiment of this invention, (a) is a front view, (b) is a J part enlarged view. FIG. Unlike the second embodiment illustrated in FIG. 9, a plurality of detection holes 64 are formed in the bushing 63. In addition, the same code | symbol is attached | subjected to the component same as 2nd Embodiment, and description is abbreviate | omitted.

In this way, when a large number of detection holes are formed in the bushing, the flame discharge can be detected by the surface, and the detection range can be expanded.

In the second and third embodiments, the through hole 57 is formed in a circular shape, and the bushing 63 is formed in a substantially circumferential shape. For example, as shown in FIG. 12, the through hole 57 is shown. ) And bushing 63 may be formed in a shape in which one end is widened in diameter. In addition, it may be formed in a rectangular shape, or may be a long hole shape, and there is no limitation on the shape of the through hole and the bushing of the outlet case 52.

<4th embodiment>

14 and 15 show a fourth embodiment of the present invention, FIG. 14A shows a front view of a power outlet device, FIG. 14B shows an enlarged view of a portion F, and FIG. a) is sectional drawing of the CC line, and FIG.15 (b) shows the enlarged view of G part. 9, the structure of the permeation | transmission hole 57 and the bushing 70, and the shape of the sensor 72 differ from each other. The bushing 70 is formed to have a slightly smaller external shape than the shape of the through hole 57 by the insulating material. FIG. 16 is a perspective view of the bushing 70, which is formed in a cylindrical shape in accordance with the transmission hole 57, and a locking projection 70a is formed around the upper and lower ends. When the bushing 70 is inserted into the transmission hole 57, the locking projection 70a is mounted by locking the edge of the transmission hole 57. In addition, the same code | symbol is attached | subjected to the component same as 2nd Embodiment shown in FIG. 9, 10, and description is abbreviate | omitted.

By forming the bushing 70 in this manner, the outer surface of the outlet case 2 and the inner surface of the outlet case 2 are communicated between the permeation hole 57 and the bushing 70 which are the periphery of the bushing 70. The gap 71 is formed and can be used as a hole when the sensor 67 described later detects a spark discharge. However, the tip facing the bushing 70 of the sensor 72 is formed flat in accordance with the shape of the gap 71, and the flame discharge can be detected by the surface.

In this configuration, tracking detection of the power outlet device 1 is performed as follows. Spark discharge which causes tracking by dust and moisture accumulated between the blades of the plugs connected to the receiving blades 62 and 62 is generated. When the spark discharge enters the gap 71 between the transmission hole 57 and the bushing 70 and contacts the sensor 72, a minute current flows. The tracking detection circuit detects the tracking from the output current of the sensor 72, operates the breaker built into the outlet case 52, cuts off the converter, and displays the display by the display lamp 59.

In this way, by attaching the bushing to the through hole, it is not necessary to reduce the hole diameter of the through hole. Thus, the formability of the outlet case is good and the productivity is improved. In addition, the gap between the transmission hole and the bushing used as the detection hole of the sensor can be easily formed.

<Fifth Embodiment>

17 and 18 show a fifth embodiment of the present invention, FIG. 17A shows a front view of a power outlet device, FIG. 17B shows an enlarged view of a part F, and FIG. a) is a sectional view of the DD line, and FIG. 18B is an enlarged view of part I. FIG. The shape of the bushing 74 is mainly different from the fourth embodiment illustrated in FIG. 14. In addition, the same code | symbol is attached | subjected to the same component as 4th Embodiment, and description is abbreviate | omitted.

The bushing 74 is formed of an insulating material and has a shape as shown in the perspective view of FIG. 19. The bushing 74 is formed in substantially the same shape as the through hole 5, and a plurality of grooves 74b extending in the insertion direction are formed on the surface in contact with the through hole 57 of the bushing 74. As shown in FIG.

This groove 74b forms a gap 71 in the contact surface between the bushing 74 and the through hole 57, and when a spark discharge enters the gap 71 and contacts the sensor 72, a minute current is generated. Flow. The tracking detection circuit detects the tracking from the output current of the sensor 72, operates the breaker built in the outlet case 52, cuts off the converter, and performs display by the display lamp 59.

By attaching the bushing to the transmission hole in this manner, the hole diameter of the transmission hole does not have to be made small, so that the formability of the outlet case is good and the productivity is improved. In addition, the gap between the transmission hole and the bushing used as the detection hole of the sensor can be easily formed.

In addition, the groove 74b may be formed not on the bushing 74 but on the surface in contact with the bushing 74 of the transmission hole 57. In addition, the number of the grooves 74b may be one. However, when the groove 74b is plural, the detection range of the sensor 72 can be widened.

In the fourth and fifth embodiments, the transmission holes 57 are formed in a circular shape. For example, the transmission holes 57 and the bushings 74 may be formed in a rectangular shape or in a long hole shape. If there is a gap between both, the shape is not limited. In addition, the attachment structure of the bushing 74 may also be adhered and attached, or may be press-fitted.

Sixth Embodiment

20 and 21 show a sixth embodiment of the present invention, FIG. 20 is a front view of the power outlet device, and FIG. 21 is a sectional view taken along the line E-E. The outlet case 82 of the power outlet device 1 includes a main body 83 having an open front face, a cover body 84 attached to close the front opening of the main body 83, a main body 83 and a cover body ( It consists of the intermediate base body 85 accommodated in the internal space formed by 84). The outlet case 82 is made of an insulating material such as a synthetic resin, and an electric leakage detecting circuit and a breaker for blocking the converter are incorporated therein.

In the cover body 84, a pair of plug insertion holes 86 and 86 for inserting a blade of a plug (not shown) into the front surface is formed at two positions in the center and the lower portion, and the respective plug insertion holes 86 and 86 are respectively provided. The through hole 87 is formed at an intermediate position between the two holes. In addition, the upper part of the cover body 84 is tested for the operation handle 88 for return operation of the breaker which cut | disconnected at the time of tracking, the display lamp 89 which shows a short circuit occurrence, a tracking occurrence, etc., and a short circuit interruption operation. The test button 90 is provided.

The inner side of the plug insertion port 86 is provided with the accommodating blade 92 which pinches the blade of the plug, and the permeation hole 87 is formed long in parallel with the longitudinal direction of the accommodating blade 92. An insulating water permeable body 93 shown in the perspective view of FIG. 11 is attached to the transmission hole 87. The water permeable body 93 is slightly larger in shape than the shape of the permeable aperture 87, and is formed in accordance with the permeable aperture 87. For example, wood, sponge, fiber, or the like is used. The water permeable body 93 is press-fitted into the transmission hole 87 and mounted.

In the outlet case 82, a sensor 97 is disposed on the rear surface of the water permeable body 93, which is an inner side of the transmission hole 87. The sensor 97 is formed of a conductive member such as a metal plate, and is connected to a tracking detection circuit of the circuit board 98 disposed inside the outlet case 82.

In this configuration, tracking detection of the power outlet device 1 is performed as follows. Between the blades of the plugs connected to the receiving blades 92 and 92, if spark discharges that cause tracking are caused by dust and moisture, the spark discharges contact the water permeable body 93. At this time, since the water permeable body 93 also has moisture and is conductive, current flows to the sensor 97 through the water permeable body 6. From the output current of this sensor 92, the tracking detection circuit detects tracking, operates the breaker built in the outlet case 82, cuts off the converter, and performs display by the display lamp 89. FIG.

In this way, since the water permeable body is attached to the permeable hole, it is not necessary to form the hole diameter of the permeable hole small, the formability of the outlet case is good, and the productivity is improved. In addition, the flame discharge can be detected throughout the permeation hole, the detection range of the flame discharge can be expanded, and the cleaning can be easily performed by wiping the surface of the water penetrant, and can be easily cleaned.

In addition, in the said 6th Embodiment, although the perforation hole was formed in elongate long hole shape, you may form in a circular shape or a rectangular shape, for example. In addition, although the said embodiment was shown by the wall outlet structure installed in a wall surface, the shape of table tab etc. which a plurality of plugs can connect may be sufficient. The breaker is built in to break the converter, but the operation of the tracking detection is not limited.

Thus, according to the invention of claims 1 to 16, the attachment of the sensor for detecting the spark discharge and the connection between the sensor and the circuit board are easy and the assemblability is improved. In addition, according to the inventions of claims 17 to 19, since it is not necessary to form the permeable holes small to the limit, the moldability of the outlet case is good and the productivity is improved.

Claims (19)

At least one pair of plug insertion holes are provided on the front face of the outlet case formed of an insulating material, and a pair of receiving blades for holding the plug blades inside the plug insertion hole is provided. A power outlet device having a permeation hole between the plug insertion holes of a and a sensor for detecting the spark discharge generated between the blades of the plug inside the permeation hole. A power outlet device comprising: a partition wall formed of an insulator is erected between the storage blades, the sensor is accommodated in the partition wall, and a part of the sensor faces the transmission hole. The method of claim 1, The outlet case includes an intermediate base body for supporting the sensor, a main body for supporting the sensor, a main body for supporting the sensor, and a cover body covering the front surface of the main body and having a plug insertion opening. Power outlet unit. The method of claim 1, And the sensor is accommodated in the partition wall by insert molding. The method of claim 2, And the sensor is accommodated in the partition wall by insert molding. The method of claim 1, And a sensor insertion hole formed in the partition wall, and the sensor is inserted into the sensor insertion hole and accommodated therein. The method of claim 2, And a sensor insertion hole formed in the partition wall, and the sensor is inserted into the sensor insertion hole and accommodated therein. The method of claim 2, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and is inserted into an insertion section provided on the circuit board to be electrically connected. Outlet device. The method of claim 3, wherein The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and is inserted into an insertion section provided on the circuit board to be electrically connected. Outlet device. The method of claim 4, wherein The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and is inserted into an insertion section provided on the circuit board to be electrically connected. Outlet device. The method of claim 5, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and is inserted into an insertion section provided on the circuit board to be electrically connected. Outlet device. The method of claim 6, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and is inserted into an insertion section provided on the circuit board to be electrically connected. Outlet device. The method of claim 2, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and at least one of the rear end of the sensor and the sensor connection portion on the circuit board side is elastically deformable. And an electrical outlet by contacting the electrical outlets. The method of claim 3, wherein The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and at least one of the rear end of the sensor and the sensor connection portion on the circuit board side is elastically deformable. And an electrical outlet by contacting the electrical outlets. The method of claim 4, wherein The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and at least one of the rear end of the sensor and the sensor connection portion on the circuit board side is elastically deformable. And an electrical outlet by contacting the electrical outlets. The method of claim 5, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and at least one of the rear end of the sensor and the sensor connection portion on the circuit board side is elastically deformable. And an electrical outlet by contacting the electrical outlets. The method of claim 6, The sensor is formed of a metal plate, and the circuit board is disposed behind the partition wall, the rear end of the sensor extends to the circuit board, and at least one of the rear end of the sensor and the sensor connection portion on the circuit board side is elastically deformable. And an electrical outlet by contacting the electrical outlets. At least one pair of plug insertion holes are provided on the front face of the outlet case formed of an insulating material, and a pair of accommodating blades for holding the plug blades inside the plug insertion hole is provided. In the power outlet device which has a permeation hole between the said plug insertion opening of the front surface, and arrange | positions the sensor which detects the flame discharge which generate | occur | produces between the blades of the said plug inside the said permeation hole, A bushing made of an insulator having elasticity is pressed into the through hole, and the bushing has at least one through hole in a press-in direction, and the sensor communicates with the outlet case surface by contacting the sensor with the through hole. A power outlet device characterized by enabling discharge to be detected. At least one pair of plug insertion holes is provided on the front face of the outlet case formed of an insulating material, and a pair of receiving blades for holding the plug blades inside the plug insertion hole is provided. In the power outlet device which has a permeation hole between the said plug insertion holes, and arrange | positions the sensor which detects the flame discharge which generate | occur | produces between the blades of the said plug inside the said permeation hole, The bushing made of an insulator having elasticity is press-fitted into the transmission hole, and has a gap in at least one position of the contact surface between the bushing and the transmission hole, and the surface of the outlet case communicates with the sensor by the gap. A power outlet device characterized by enabling detection of a flame discharge. At least one pair of plug insertion holes is provided on the front face of the outlet case formed of an insulating material, and a pair of receiving blades for holding the plug blades inside the plug insertion hole is provided. A power outlet device having a permeation hole between the plug insertion openings, and having a sensor detecting a spark discharge generated between blades of the plug inside the permeation hole. And a bushing formed of an insulating water permeable body is embedded in the transmission hole.

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